#include "serial.h"

struct Packet_Type Serial = {NULL};

void Serial_Init(uint32_t baud_rate)
{
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
	
	GPIO_InitTypeDef GPIO_InitStructure;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);
	
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);

	USART_InitTypeDef USART_InitStructure;
	USART_InitStructure.USART_BaudRate = baud_rate;
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
	USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
	USART_InitStructure.USART_Parity = USART_Parity_No;
	USART_InitStructure.USART_StopBits = USART_StopBits_1;
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    
	USART_Init(USART1, &USART_InitStructure);
	
	USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);  //每接收一个字节中断一次
    USART_ITConfig(USART1, USART_IT_IDLE, ENABLE);  //串口空闲时中断
	
    NVIC_InitTypeDef NVIC_InitStructure;
    NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_Init(&NVIC_InitStructure);
	
	USART_Cmd(USART1, ENABLE);
}

void Serial_SendByte(uint8_t Byte)
{
	USART_SendData(USART1, Byte);
	while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
}

void Serial_SendArray(uint8_t *Array, uint16_t Length)
{
	uint16_t i;
	for (i = 0; i < Length; i ++)
	{
		Serial_SendByte(Array[i]);
	}
}

void Serial_SendString(char *String)
{
	uint8_t i;
	for (i = 0; String[i] != '\0'; i ++)
	{
		Serial_SendByte(String[i]);
	}
}

uint32_t Serial_Pow(uint32_t X, uint32_t Y)
{
	uint32_t Result = 1;
	while (Y --)
	{
		Result *= X;
	}
	return Result;
}

void Serial_SendNumber(uint32_t Number, uint8_t Length)
{
	uint8_t i;
	for (i = 0; i < Length; i ++)
	{
		Serial_SendByte(Number / Serial_Pow(10, Length - i - 1) % 10 + '0');
	}
}

int fputc(int ch, FILE *f)
{
	Serial_SendByte(ch);
	return ch;
}

void Serial_Printf(char *format, ...)
{
	char String[100];
	va_list arg;
	va_start(arg, format);
	vsprintf(String, format, arg);
	va_end(arg);
	Serial_SendString(String);
}


void Serial_SendPacket(void)
{
    
}

uint8_t Serial_GetRxFlag(void)
{
	if (Serial.complete == 1)
	{
		Serial.complete = 0;
		return 1;
	}
	return 0;
}

uint8_t Serial_DataCheck(void)
{
    if (Serial.complete == 1)
	{
		Serial.complete = 0;
		return (ADD8_Check(Serial.payload, Serial.length));
	}
    return 0;
}
/*
void USART1_IRQHandler(void)
{    
	if (USART_GetITStatus(USART1, USART_IT_RXNE) == SET)    //接收每个字节
	{
        //接收计数器清空后才可接收，防止数据帧错乱
        if(Serial.complete == 0)
        {
            //将数据写入RX缓存区
            Serial.payload[Serial.length++] = USART1->DR;
        }
        USART_ClearITPendingBit(USART1, USART_IT_RXNE);
	}
    else if(USART_GetITStatus(USART1, USART_IT_IDLE) == SET)    //一帧数据接收完成
    {
        USART1->SR;
        USART1->DR;
        Serial.complete = 1;    //拉起接收完成标志位
        USART_ClearITPendingBit(USART1, USART_IT_IDLE);
    }
}
*/
